Annie Morrill Smith (February 13, 1856 – November 11, 1946) was an American botanist and bryologist from Brooklyn. She was a largely self-taught amateur who became important to the Sullivant Moss Society. From 1906 to 1911 she acted as the sole editor of The Bryologist. She also published a number of important genealogical books. Born Annie Elizabeth Morrill, she was a daughter of Cynthia (Langdon) and Henry Edwin Morrill, M.D. She was educated at Packer Collegiate Institute, and in 1880 married Hugh Montgomery Smith, a physician who died unexpectedly in 1897.